A professional who measures or weighs ingredients, such as sulfur, zinc oxide, stearic acid, and granulated cork, preparatory to mixing into cork composition material. Respnsibilities include:

• Scoops or pours ingredients on scale or in graduate and dumps prescribed quantities into containers.
• Marks or stencils container to identify materials and records quantities and types.
• Scoops samples from containers and delivers them to laboratory for analysis.
• Delivers filled containers to mixing machine, using handtruck.